Question: The following table shows four rows from a frequency distribution table for a sample of n = 50 scores. Use interpolation to find the percentiles

The following table shows four rows from a frequency distribution table for a sample of n = 50 scores. Use interpolation to find the percentiles and percentile ranks requested:

X f cf c%

15–19 3 50 100 10–14 6 47 94 5–9 8 41 82 0–4 18 33 66

a. What is the percentile rank for X = 17?

b. What is the percentile rank for X = 6?

c. What is the 70th percentile?

d. What is the 90th percentile?

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